Tension regulator



March 25, 1930. L B. CASE TENSION REGULATOR Fled June 20, 1928 kPatentedMar. 25, 1930 n UNITEDv ,STATES *.Argsr .FricE-i LYNN B. CASE, orHIGHLAND PARK, NEW JERSEY, AssreNoR To .Toi-INWALDRON CORPORATION, OFNEW JERSEY v BRUNSWICK, NEW' JERSEY, A yCORPORA'JIION OF vNEW TENSIONREGULATOR Original application led June 11, 1926, Serial No. 115,398.Divided and this application led .'lkune20p 192s. serial No. 286,923. j

- This invention relates to machines for coating web material, such asthat shown and described in. my co-pending application for lU-S.`Letters Patent, Serial No. 115,398, filed June 111, 1926, of whichthe present application is a division.

The present application is directed to means for controlling the amountof braking friction applied to the roll of stock in order to maintainthe proper amountv of tension on the web as it passes through themachine. i Referring tothe single ligure of the drawing, one of the sideframes of the machine is illustrated at 1, it being understood that asimilar frame is located at the opposite side of the machine forproviding a suitable'support for the elements of the machine.

The web material to be coated is placed'.

A upon the machine in the form of a roll a', be-

ing rotatably mounted on the side frames, and placed under the controlvof brakingy mechanism hereinafter more fully described, and whereby therotation of the roll is retarded.

The material passes from the roll m in the form of a Yweb m1 under aguide roll 2 rotatably mounted on the side frames l, then over a secondguide roll 3, and thereafter passing Y under a guide roll 4. The web w1then passes over a guide roll Gand under a chilled iron roll 7. Each ofsaid rollers is rotatably mounted in suitable bearings secured to theside frames 1 of the machine. i

Parallel to and adjacent the roll 7 is a roll 12 which supports one endof an apron 15, the opposite end of which passes around and is supportedby a second roll 16. The apronf` 15 may be composed of rubber or othersuitable material.

Intermediate the rolls 12 and 16 is a coating table 20 over which theapron 15 passes, the web w1 also passing over the table 20 in contactwith the upper surface'of'the apron 15. Y The web w1 passes fr om theapron 15 onto aperforated belt 21, rotatably-supported on rollers 23 and24 suitably mounted on the frames 1.

Intermediate the rolls 23 and 24 is a vacuv um box 25 which produces asuction through the perforations of that portion of the belt 21immediately overlying the vacuum box 25.

kThe web m1, in passing from the apron 15, lies in contact with theupper run of the belt' 21,

and by meansA of the vacuum boX 25 is maintained in substantially rigidcontact with the belt 21.

The coating material is applied to the web m1 immediately adjacent theroll 7 by means of a revolving brush 26,'the brush`26 receiving a supplyof coating material from a tank 27 by means of a color rolll 28 which ismaintained at a position partially submerged in rial is accomplished bymeans of a series of batteries of vibrating brushes illustrated at 30,31 and 32. The operation of the elements of the machine is described inthe above mentioned copending application, and therefore will not bereiterated in this application. A pulley 100 is secured to a shaft 101rotatably mounted in bearings on the main frames of the machine, and isadapted to supl ply power to the perforated belt 21 for drawing the lwebx1 through the machine. Se-

Y cured to the shaft 101 is a sprocket wheel 102 connected by vmeans ofa sprocket chain'V 103 with a sprocket 104 secured to a shaft 18,

from which the belt 15 isV driven by ymeans of a ksecond sprocket wheel105` connected by a sprocket chain 106 with a sprocket 107 secured toone lof the trunnions of theroller rotatably mounted in bearings 126-atthe respective ends thereof, each bearing being secured to a beam 127mounted on the main frames 1, 1, respectively, by means of rollerbearings 128, 128. AY brake drum 129 is secured to one end of the shaft125 and is operatively engaged and partially encircled by a. brake band130, one end of which is adjustably secured to the adj acentbeam 127,the other end thereof being pivoted to one leg g of a bell crank lever131 pivoted at 132 to the said beam 127. The other leg 133 of the bellcrank lever is in the form of a wedge and is adapted to have itsangularside engaged by aroller '134 lrotatably lmounted on the frame 1. Theopposite end 4ot each of thebeams 127 is provided with a gearraclr I135,meshingwith a pinion 136, secured to a shaft v13'? rotatably mounted inthe trames 1, 1. A plain Jraced wheel 138 is secured to the shaft 137and hasone end of a strap 139 secured thereto,the strap passing around apulley 140 and Ahaving an adjustable weight,

- comprising removable discs 141, suspended on its free end.

The weights 14:1 tend to torce the. supportingybeams 127, 127, with'theroll fr and the bell cranl; lever 131 outward, untilY the bellcrankisengagedby .the roller 13st,'the arm 133 ythereof being depressedand thereby tightening the brake band i130 on the drum v129,retarding'the rotation ot' the roll a and applying tension to the webx1. As the tension becomes abnormal the entire structure of beams, bellcrank and roll are moved inward against theactionotthe weight by thepull of the web m1, and theibrake band rial; a stationary trame; meansfor draw- Y ing a web of material from a stock supply; meansforautomatically maintaining the web under,uniformtensiom comprising amovable Jframe adaptedto beymoved inone direction by the pull ot thematerial; means on the movable trame for retarding the delivery of said.web `from the said stock supply;

means on the stationary frame for operating Y the retarding means; andmeans for moving the movable :frame inthe opposite direction tocounterbalance the effect of thepiill'on the vmaterial and to causeactuation ot the retarding means on the movable trame, bythe operating.means-on the stationary frame.4

I 2. AIn .a machine for handling web material; a stationary frame; meansfor drawing ka web otimaterial continuously through the machinero'm v astock supply; means for automatically maintaining .the web under.operating the -retarding means;

uniform tension, while passing through machine, comprising a movablysupporter the to frame ada ted to siinioit said stock su l i i L l Dsaid movable frame being adapted to be moved in one direction bythe pullor the material; means on tli'efmovablefraine for retarding` thedelivery ot said web i 1om the said stock supply; means on the.stationary trame Jtor operating the retardingiineans; and means 'formoving the' movable trame in the opposite direction to counterbalancethe eli'ectof the pull yon the material and to cause actuation or theretarding means on the Vmovable frame, by the operating means oni'tnestationary frame. Y

3. 1n a machine for handlingwehlmaterial; a stationary frame; meansicordrawin'g a web of. material continuously through the machine from astoclrv supply inthe formel" a roll.;` means for automaticallymaintaining the web under uniform tension while "passing throughthezmachine, ,comprising a movably supported frame adapted torevolvablysupport said roll, said frame and said rollbeingadapted tofmove-in onedirection bythe pull of the material; means on Vthe movable frame forretarding .the rotationV of theroll;'means on the stationary frame forand means n 'for moving the movable frame and the roll in the oppositedirection to counte'rbalance the effect ofthe pull `on the material randto cause actuation or" the retarding means on-the movable frame, by theoperating means on the stationary Jframe.

4. In aimachine for coating web material, comprising a stationarytraine; means for drawing a web vof material continuously through themachine Jfrom a'I stoclr supply `in the form of a roll; means Jforautomatically maintaining the web underv uniform tension, while passingthrough the machine, comprising a inovably supported framev adapted torevolvably support said roll, said trame and said roll being adapted tomove in oneV direction by the pull of the material; means for retardingthe rotation of the roll on the movable trame;l means for operatingtheretarding means on the stationary frame;

*and means for moving the movable frame and the roll in the oppositedirection to counteibalanee the effect ofthe pull on the inaterial andtocause actuation or" the retarding means on the movable trame, by theoperating means on the stationary frame. A i Y V5.111 a machine forcoating web material, comprising a stationary trame; means 'for drawinga web or" material continuously through the machine from took roll;means for automatically maintaining the web under uniform tension, whilepassing through the vir'iachine', comprising ajmovablv supported frameadapted -to revolvably support said roll, said frame and said rollbeingadapted to move in one direction by the .pull ofthe material; a brake onthe movable frame for retarding the rotation ofthe roll; a lever foroperating said brake; a projection on the stationary frame adaptedtoengage and l operate said lever; and means for moving the movable frameand the roll in the opposite direction to counterbalance the effect ofthe pull on the material and to cause actuation of the brake operatinglever on the movable frame, by the operating projection on thestationary frame.

6. In a machine for coating Web material, comprising a stationary frame;means for drawing a Web of material continuously through the machinefrom a stock roll; means for automatically maintaining the web yunderuniform tension;wliile passing through the machine, comprising a movablysupported frame adapted to revolvably support said roll, said frame andsaid roll being adapted to move in one direction by the pull of thematerial; a brake on the movable framey for retarding the rotation ofthe roll; a lever for operating said brake; a roller on the stationaryframe adapted to be engaged by said lever; and means for moving themovable frame and the roll in the opposite direction to counterbalancethe effect of the pull on the material and to cause actuation of thebrake operating lever on the movable frame, by the operating roller onthe stationary frame.

7. In a machine for coating web material provided With a rigid frame;the combination of means for drawing a web of material continuouslythrough the machine from a roll of stock; a supporting shaft for saidroll; a brake drum on said shaft; a frame movably supported on saidrigid frame; anti-friction bearings between the movable frame and therigid frame; bearings on said movable frame for said roll shaft; a bellcrank pivoted to said movable frame; a brake band engaging said brakedrum and having one end secured to said movable frame and the oppositeend secured to one arm of said bell crank; an arm on said bell cranlrand having an angulariy disposed side; a roller,

on said rigid frame, adapted to engage the angular side of said arm; andmeans for moving said movable frame and its associated elements in acounter direction to the direction of travel of the web, as it is drawnfrom the roll.

8. In a machine for coating Web material provided with a rigid frame,the combination of means for drawing a web of material continuouslythrough the machine from a roll of stock; a supporting shaft for saidroll; a brake drum on said shaft; a frame movably supported on saidrigid frame; anti-friction bearings between the movable frame and therigid frame; bearings on said movable frame for said roll shaft; a bellcrank pivoted to said movable frame; a brake band engaging saidbrakedrum and having one end secured yto said v to one arm of said bellcrank; an arm on" said bell crank and having an angularly disposed side;a roller, on said rigid frame, adapted to engage the angular -side ofsaid arm; means for moving said movable frame and itsassociated'elements ina counter direction to the direction of travel ofthe Web,y

as it is drawn from the roll; comprising a gear rack on said movableframe; a gearL LYNN B. CASE.

vmovable frame andthe opposite end secured ite

